Modules in ECMAScript 6.0

© 2015 Eyal Vardi. All rights reserved. Tel: 054-5-767-300, Email: [email protected]




export const sqrt = Math.sqrt;export function square(x) { return x * x; }export function diag(x, y) {

return sqrt(square(x) + square(y));}

import { square, diag } /* or '*' */ from 'lib';

console.log(square(11)); // 121console.log(diag(4, 3)); // 5


//------ myFunc.js ------export default function () { ... };

//------ main1.js ------import myFunc from 'myFunc';myFunc();


if (Math.random()) {

exports.baz = ...;

}


// Export lib

export * from 'src/lib';

// Export from lib just foo and bar

export { foo, bar } from 'src/lib';

// Export from lib, foo as myFoo

export { foo as myFoo, bar } from 'src/other_module';



// Default exports and named exportsimport theDefault from 'src/mylib';import { named1, named2 } from 'src/mylib';import theDefault, { named1, named2 } from 'src/mylib';

// Renaming: import named1 as myNamed1import { named1 as myNamed1, named2 } from 'src/mylib';

// Importing the module as an objectimport * as mylib from 'src/mylib';

// Only load the moduleimport 'src/mylib';



import { url } from this module;

console.log(url);

// Option II

import * as metaData from this module;

console.log(metaData.url);


Promise.all(

['module1', 'module2', 'module3']

.map(x => System.import(x)))

.then(function ([module1, module2, module3]) { ... });



http://www.2ality.com/

Understanding ECMAScript 6

http://ecmascript6.org/

A Few New Things Coming To JavaScript

HARMONY OF DREAMS COME TRUE

Harmony specification_drafts

http://www.2ality.com/

https://leanpub.com/understandinges6

http://ecmascript6.org/

http://addyosmani.com/blog/a-few-new-things-coming-to-javascript/

https://brendaneich.com/2012/10/harmony-of-dreams-come-true/

http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts&do=backlink


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Modules in ECMAScript 6.0